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TWI876491B - Photocurable resin compotiosion, display device and a method of producing the display device - Google Patents

Photocurable resin compotiosion, display device and a method of producing the display device Download PDF

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Publication number
TWI876491B
TWI876491B TW112131950A TW112131950A TWI876491B TW I876491 B TWI876491 B TW I876491B TW 112131950 A TW112131950 A TW 112131950A TW 112131950 A TW112131950 A TW 112131950A TW I876491 B TWI876491 B TW I876491B
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Taiwan
Prior art keywords
image display
resin composition
meth
photocurable resin
acrylate
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TW112131950A
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Chinese (zh)
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TW202348660A (en
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中村司
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日商迪睿合股份有限公司
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    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08F—MACROMOLECULAR COMPOUNDS OBTAINED BY REACTIONS ONLY INVOLVING CARBON-TO-CARBON UNSATURATED BONDS
    • C08F265/00—Macromolecular compounds obtained by polymerising monomers on to polymers of unsaturated monocarboxylic acids or derivatives thereof as defined in group C08F20/00
    • C08F265/04—Macromolecular compounds obtained by polymerising monomers on to polymers of unsaturated monocarboxylic acids or derivatives thereof as defined in group C08F20/00 on to polymers of esters
    • C08F265/06—Polymerisation of acrylate or methacrylate esters on to polymers thereof
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08F—MACROMOLECULAR COMPOUNDS OBTAINED BY REACTIONS ONLY INVOLVING CARBON-TO-CARBON UNSATURATED BONDS
    • C08F220/00—Copolymers of compounds having one or more unsaturated aliphatic radicals, each having only one carbon-to-carbon double bond, and only one being terminated by only one carboxyl radical or a salt, anhydride ester, amide, imide or nitrile thereof
    • C08F220/02—Monocarboxylic acids having less than ten carbon atoms; Derivatives thereof
    • C08F220/10—Esters
    • C08F220/20—Esters of polyhydric alcohols or phenols, e.g. 2-hydroxyethyl (meth)acrylate or glycerol mono-(meth)acrylate
    • G—PHYSICS
    • G02—OPTICS
    • G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B5/00—Optical elements other than lenses
    • G02B5/30—Polarising elements
    • G02B5/3025—Polarisers, i.e. arrangements capable of producing a definite output polarisation state from an unpolarised input state
    • G02B5/3033—Polarisers, i.e. arrangements capable of producing a definite output polarisation state from an unpolarised input state in the form of a thin sheet or foil, e.g. Polaroid
    • G02B5/3041—Polarisers, i.e. arrangements capable of producing a definite output polarisation state from an unpolarised input state in the form of a thin sheet or foil, e.g. Polaroid comprising multiple thin layers, e.g. multilayer stacks
    • G02B5/305—Polarisers, i.e. arrangements capable of producing a definite output polarisation state from an unpolarised input state in the form of a thin sheet or foil, e.g. Polaroid comprising multiple thin layers, e.g. multilayer stacks including organic materials, e.g. polymeric layers
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B27/00—Layered products comprising a layer of synthetic resin
    • B32B27/30—Layered products comprising a layer of synthetic resin comprising vinyl (co)polymers; comprising acrylic (co)polymers
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08F—MACROMOLECULAR COMPOUNDS OBTAINED BY REACTIONS ONLY INVOLVING CARBON-TO-CARBON UNSATURATED BONDS
    • C08F2/00—Processes of polymerisation
    • C08F2/46—Polymerisation initiated by wave energy or particle radiation
    • C08F2/48—Polymerisation initiated by wave energy or particle radiation by ultraviolet or visible light
    • C08F2/50—Polymerisation initiated by wave energy or particle radiation by ultraviolet or visible light with sensitising agents
    • C—CHEMISTRY; METALLURGY
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    • C08F220/00—Copolymers of compounds having one or more unsaturated aliphatic radicals, each having only one carbon-to-carbon double bond, and only one being terminated by only one carboxyl radical or a salt, anhydride ester, amide, imide or nitrile thereof
    • C08F220/02—Monocarboxylic acids having less than ten carbon atoms; Derivatives thereof
    • C08F220/10—Esters
    • C08F220/12—Esters of monohydric alcohols or phenols
    • C08F220/16—Esters of monohydric alcohols or phenols of phenols or of alcohols containing two or more carbon atoms
    • C08F220/18—Esters of monohydric alcohols or phenols of phenols or of alcohols containing two or more carbon atoms with acrylic or methacrylic acids
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08F—MACROMOLECULAR COMPOUNDS OBTAINED BY REACTIONS ONLY INVOLVING CARBON-TO-CARBON UNSATURATED BONDS
    • C08F220/00—Copolymers of compounds having one or more unsaturated aliphatic radicals, each having only one carbon-to-carbon double bond, and only one being terminated by only one carboxyl radical or a salt, anhydride ester, amide, imide or nitrile thereof
    • C08F220/02—Monocarboxylic acids having less than ten carbon atoms; Derivatives thereof
    • C08F220/10—Esters
    • C08F220/26—Esters containing oxygen in addition to the carboxy oxygen
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08F—MACROMOLECULAR COMPOUNDS OBTAINED BY REACTIONS ONLY INVOLVING CARBON-TO-CARBON UNSATURATED BONDS
    • C08F220/00—Copolymers of compounds having one or more unsaturated aliphatic radicals, each having only one carbon-to-carbon double bond, and only one being terminated by only one carboxyl radical or a salt, anhydride ester, amide, imide or nitrile thereof
    • C08F220/02—Monocarboxylic acids having less than ten carbon atoms; Derivatives thereof
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    • C08F220/343—Esters containing nitrogen, e.g. N,N-dimethylaminoethyl (meth)acrylate in the form of urethane links
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08F—MACROMOLECULAR COMPOUNDS OBTAINED BY REACTIONS ONLY INVOLVING CARBON-TO-CARBON UNSATURATED BONDS
    • C08F220/00—Copolymers of compounds having one or more unsaturated aliphatic radicals, each having only one carbon-to-carbon double bond, and only one being terminated by only one carboxyl radical or a salt, anhydride ester, amide, imide or nitrile thereof
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    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08F—MACROMOLECULAR COMPOUNDS OBTAINED BY REACTIONS ONLY INVOLVING CARBON-TO-CARBON UNSATURATED BONDS
    • C08F283/00—Macromolecular compounds obtained by polymerising monomers on to polymers provided for in subclass C08G
    • C08F283/006—Macromolecular compounds obtained by polymerising monomers on to polymers provided for in subclass C08G on to polymers provided for in C08G18/00
    • C08F283/008—Macromolecular compounds obtained by polymerising monomers on to polymers provided for in subclass C08G on to polymers provided for in C08G18/00 on to unsaturated polymers
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08F—MACROMOLECULAR COMPOUNDS OBTAINED BY REACTIONS ONLY INVOLVING CARBON-TO-CARBON UNSATURATED BONDS
    • C08F290/00—Macromolecular compounds obtained by polymerising monomers on to polymers modified by introduction of aliphatic unsaturated end or side groups
    • C08F290/02—Macromolecular compounds obtained by polymerising monomers on to polymers modified by introduction of aliphatic unsaturated end or side groups on to polymers modified by introduction of unsaturated end groups
    • C08F290/06—Polymers provided for in subclass C08G
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08F—MACROMOLECULAR COMPOUNDS OBTAINED BY REACTIONS ONLY INVOLVING CARBON-TO-CARBON UNSATURATED BONDS
    • C08F290/00—Macromolecular compounds obtained by polymerising monomers on to polymers modified by introduction of aliphatic unsaturated end or side groups
    • C08F290/02—Macromolecular compounds obtained by polymerising monomers on to polymers modified by introduction of aliphatic unsaturated end or side groups on to polymers modified by introduction of unsaturated end groups
    • C08F290/06—Polymers provided for in subclass C08G
    • C08F290/067—Polyurethanes; Polyureas
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08G—MACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONS ONLY INVOLVING UNSATURATED CARBON-TO-CARBON BONDS
    • C08G18/00—Polymeric products of isocyanates or isothiocyanates
    • C08G18/06—Polymeric products of isocyanates or isothiocyanates with compounds having active hydrogen
    • C08G18/28—Polymeric products of isocyanates or isothiocyanates with compounds having active hydrogen characterised by the compounds used containing active hydrogen
    • C08G18/67—Unsaturated compounds having active hydrogen
    • C08G18/671—Unsaturated compounds having only one group containing active hydrogen
    • C08G18/672—Esters of acrylic or alkyl acrylic acid having only one group containing active hydrogen
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08G—MACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONS ONLY INVOLVING UNSATURATED CARBON-TO-CARBON BONDS
    • C08G18/00—Polymeric products of isocyanates or isothiocyanates
    • C08G18/06—Polymeric products of isocyanates or isothiocyanates with compounds having active hydrogen
    • C08G18/70—Polymeric products of isocyanates or isothiocyanates with compounds having active hydrogen characterised by the isocyanates or isothiocyanates used
    • C08G18/72—Polyisocyanates or polyisothiocyanates
    • C08G18/74—Polyisocyanates or polyisothiocyanates cyclic
    • C08G18/75—Polyisocyanates or polyisothiocyanates cyclic cycloaliphatic
    • C08G18/751—Polyisocyanates or polyisothiocyanates cyclic cycloaliphatic containing only one cycloaliphatic ring
    • C08G18/752—Polyisocyanates or polyisothiocyanates cyclic cycloaliphatic containing only one cycloaliphatic ring containing at least one isocyanate or isothiocyanate group linked to the cycloaliphatic ring by means of an aliphatic group
    • C08G18/753—Polyisocyanates or polyisothiocyanates cyclic cycloaliphatic containing only one cycloaliphatic ring containing at least one isocyanate or isothiocyanate group linked to the cycloaliphatic ring by means of an aliphatic group containing one isocyanate or isothiocyanate group linked to the cycloaliphatic ring by means of an aliphatic group having a primary carbon atom next to the isocyanate or isothiocyanate group
    • C08G18/755—Polyisocyanates or polyisothiocyanates cyclic cycloaliphatic containing only one cycloaliphatic ring containing at least one isocyanate or isothiocyanate group linked to the cycloaliphatic ring by means of an aliphatic group containing one isocyanate or isothiocyanate group linked to the cycloaliphatic ring by means of an aliphatic group having a primary carbon atom next to the isocyanate or isothiocyanate group and at least one isocyanate or isothiocyanate group linked to a secondary carbon atom of the cycloaliphatic ring, e.g. isophorone diisocyanate
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
    • C08K5/00—Use of organic ingredients
    • C08K5/0008—Organic ingredients according to more than one of the "one dot" groups of C08K5/01 - C08K5/59
    • C08K5/0016—Plasticisers
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
    • C08K5/00—Use of organic ingredients
    • C08K5/04—Oxygen-containing compounds
    • C08K5/05—Alcohols; Metal alcoholates
    • C08K5/053—Polyhydroxylic alcohols
    • C—CHEMISTRY; METALLURGY
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    • C09J—ADHESIVES; NON-MECHANICAL ASPECTS OF ADHESIVE PROCESSES IN GENERAL; ADHESIVE PROCESSES NOT PROVIDED FOR ELSEWHERE; USE OF MATERIALS AS ADHESIVES
    • C09J4/00—Adhesives based on organic non-macromolecular compounds having at least one polymerisable carbon-to-carbon unsaturated bond ; adhesives, based on monomers of macromolecular compounds of groups C09J183/00 - C09J183/16
    • C09J4/06—Organic non-macromolecular compounds having at least one polymerisable carbon-to-carbon unsaturated bond in combination with a macromolecular compound other than an unsaturated polymer of groups C09J159/00 - C09J187/00
    • G—PHYSICS
    • G02—OPTICS
    • G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B1/00—Optical elements characterised by the material of which they are made; Optical coatings for optical elements
    • G02B1/04—Optical elements characterised by the material of which they are made; Optical coatings for optical elements made of organic materials, e.g. plastics
    • G—PHYSICS
    • G02—OPTICS
    • G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B5/00—Optical elements other than lenses
    • G02B5/30—Polarising elements
    • G—PHYSICS
    • G02—OPTICS
    • G02F—OPTICAL DEVICES OR ARRANGEMENTS FOR THE CONTROL OF LIGHT BY MODIFICATION OF THE OPTICAL PROPERTIES OF THE MEDIA OF THE ELEMENTS INVOLVED THEREIN; NON-LINEAR OPTICS; FREQUENCY-CHANGING OF LIGHT; OPTICAL LOGIC ELEMENTS; OPTICAL ANALOGUE/DIGITAL CONVERTERS
    • G02F1/00—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics
    • G02F1/01—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour 
    • G02F1/13—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour  based on liquid crystals, e.g. single liquid crystal display cells
    • G02F1/133—Constructional arrangements; Operation of liquid crystal cells; Circuit arrangements
    • G02F1/1333—Constructional arrangements; Manufacturing methods
    • G—PHYSICS
    • G02—OPTICS
    • G02F—OPTICAL DEVICES OR ARRANGEMENTS FOR THE CONTROL OF LIGHT BY MODIFICATION OF THE OPTICAL PROPERTIES OF THE MEDIA OF THE ELEMENTS INVOLVED THEREIN; NON-LINEAR OPTICS; FREQUENCY-CHANGING OF LIGHT; OPTICAL LOGIC ELEMENTS; OPTICAL ANALOGUE/DIGITAL CONVERTERS
    • G02F1/00—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics
    • G02F1/01—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour 
    • G02F1/13—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour  based on liquid crystals, e.g. single liquid crystal display cells
    • G02F1/133—Constructional arrangements; Operation of liquid crystal cells; Circuit arrangements
    • G02F1/1333—Constructional arrangements; Manufacturing methods
    • G02F1/1335—Structural association of cells with optical devices, e.g. polarisers or reflectors
    • G02F1/133528—Polarisers
    • G—PHYSICS
    • G02—OPTICS
    • G02F—OPTICAL DEVICES OR ARRANGEMENTS FOR THE CONTROL OF LIGHT BY MODIFICATION OF THE OPTICAL PROPERTIES OF THE MEDIA OF THE ELEMENTS INVOLVED THEREIN; NON-LINEAR OPTICS; FREQUENCY-CHANGING OF LIGHT; OPTICAL LOGIC ELEMENTS; OPTICAL ANALOGUE/DIGITAL CONVERTERS
    • G02F1/00—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics
    • G02F1/35—Non-linear optics
    • G02F1/3501—Constructional details or arrangements of non-linear optical devices, e.g. shape of non-linear crystals
    • G—PHYSICS
    • G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
    • G09F—DISPLAYING; ADVERTISING; SIGNS; LABELS OR NAME-PLATES; SEALS
    • G09F9/00—Indicating arrangements for variable information in which the information is built-up on a support by selection or combination of individual elements
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    • C09K2323/00—Functional layers of liquid crystal optical display excluding electroactive liquid crystal layer characterised by chemical composition
    • C09K2323/05—Bonding or intermediate layer characterised by chemical composition, e.g. sealant or spacer
    • C09K2323/057—Ester polymer, e.g. polycarbonate, polyacrylate or polyester
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    • G02—OPTICS
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    • G02F1/00—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics
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    • G02F1/3501—Constructional details or arrangements of non-linear optical devices, e.g. shape of non-linear crystals
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  • Liquid Crystal (AREA)
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  • Polymerisation Methods In General (AREA)
  • Laminated Bodies (AREA)
  • Electroluminescent Light Sources (AREA)
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Abstract

本發明之課題在於抑制高溫環境下之偏光板之變色。 本發明之光硬化性樹脂組成物係用於依序具備包含偏光板2之影像顯示構件4、硬化樹脂層6、及透光性構件5之影像顯示裝置1中之硬化樹脂層6，且硬化後之光硬化性樹脂組成物於厚度0.3 mm時之透濕度於40℃、相對濕度90%之環境下為400 g／m 2／day以上。 The subject of the present invention is to suppress the discoloration of polarizing plates in high temperature environments. The photocurable resin composition of the present invention is used for the curable resin layer 6 in the image display device 1 which sequentially comprises an image display component 4 including a polarizing plate 2, a curable resin layer 6, and a light-transmitting component 5, and the moisture permeability of the photocurable resin composition after curing at a thickness of 0.3 mm is 400 g/m 2 /day or more in an environment of 40°C and a relative humidity of 90%.

Description

光硬化性樹脂組成物、影像顯示裝置、及影像顯示裝置之製造方法Photocurable resin composition, image display device, and method for manufacturing image display device

本技術係關於一種光硬化性樹脂組成物、影像顯示裝置、及影像顯示裝置之製造方法。本申請案係以2016年8月1日於日本提出申請之日本專利申請案編號特願2016－151290為基礎並主張其優先權，藉由參照而將該申請案引用至本申請案中。The present invention relates to a photocurable resin composition, an image display device, and a method for manufacturing the image display device. This application is based on and claims priority to Japanese patent application No. 2016-151290 filed in Japan on August 1, 2016, and the application is incorporated herein by reference.

影像顯示裝置例如可藉由如下方法而製造（例如參照專利文獻1）。首先，於影像顯示構件與透光性構件之間配置光硬化性樹脂組成物而形成樹脂組成物層。然後，藉由對樹脂組成物層照射光使其硬化而形成硬化樹脂層。如上所述，影像顯示裝置係藉由介隔硬化樹脂層將影像顯示構件與透光性構件接著、積層而製造。The image display device can be manufactured, for example, by the following method (see, for example, Patent Document 1). First, a photocurable resin composition is disposed between the image display component and the light-transmitting component to form a resin composition layer. Then, the resin composition layer is irradiated with light to cure it to form a hardened resin layer. As described above, the image display device is manufactured by bonding and laminating the image display component and the light-transmitting component via the hardened resin layer.

習知之影像顯示裝置100例如係如圖1所示，依序具備影像顯示構件4、硬化樹脂層101及透光性構件5。影像顯示構件4通常於影像顯示單元3之視認側表面形成有偏光板2。偏光板2例如係如圖2所示，使用被保護層9與保護層10夾持偏光元件8而成之積層體。A conventional image display device 100 is, for example, as shown in FIG1, and includes an image display component 4, a hardened resin layer 101, and a light-transmitting component 5 in sequence. The image display component 4 is usually formed with a polarizing plate 2 on the viewing side surface of the image display unit 3. The polarizing plate 2 is, for example, a laminate formed by sandwiching a polarizing element 8 between a protected layer 9 and a protective layer 10, as shown in FIG2.

本案發明者經研究獲知，習知之影像顯示裝置100存在於高溫環境下偏光板2發生變色之情形。 先前技術文獻 專利文獻 The inventor of this case has found through research that the conventional image display device 100 has a situation where the polarizing plate 2 changes color in a high temperature environment. Prior art literature Patent literature

專利文獻1：日本特開2014－222350號公報Patent document 1: Japanese Patent Application Publication No. 2014-222350

[發明所欲解決之課題][The problem that the invention wants to solve]

本技術係鑒於此種習知之實情而提出，其提供一種於高溫環境下可抑制影像顯示裝置中之偏光板之變色的光硬化性樹脂組成物、影像顯示裝置、及影像顯示裝置之製造方法。 [解決課題之技術手段] This technology is proposed in view of the fact of such knowledge, and provides a photocurable resin composition, an image display device, and a method for manufacturing the image display device that can suppress the discoloration of the polarizing plate in the image display device under a high temperature environment. [Technical means to solve the problem]

本技術之光硬化性樹脂組成物用於依序具備影像顯示構件、硬化樹脂層及透光性構件之影像顯示裝置中之硬化樹脂層，上述影像顯示構件包含偏光板，且硬化後之光硬化性樹脂組成物於厚度0.3 mm時之透濕度於40℃、相對濕度90%之環境下為400 g／m 2／day以上。 The photocurable resin composition of the present technology is used for a curable resin layer in an image display device having an image display component, a curable resin layer and a light-transmitting component in sequence, wherein the image display component includes a polarizing plate, and the moisture permeability of the photocurable resin composition after curing at a thickness of 0.3 mm is above 400 g/m 2 /day in an environment of 40°C and a relative humidity of 90%.

本技術之影像顯示裝置依序具備影像顯示構件、硬化樹脂層、及透光性構件，上述影像顯示構件包含偏光板，且硬化樹脂層於厚度0.3 mm時之透濕度於40℃、相對濕度90%之環境下為400 g／m 2／day以上。 The image display device of the present technology sequentially comprises an image display component, a hardened resin layer, and a light-transmitting component. The image display component includes a polarizing plate, and the moisture permeability of the hardened resin layer when the thickness is 0.3 mm is above 400 g/m 2 /day in an environment of 40°C and a relative humidity of 90%.

本技術之影像顯示裝置之製造方法包括下述步驟：將上述光硬化性樹脂組成物塗佈於包含偏光板之透光性構件之表面、或包含偏光板之影像顯示構件之表面之步驟；介隔光硬化性樹脂組成物將影像顯示構件與透光性構件貼合之步驟；及使光硬化性樹脂組成物硬化之步驟。 [發明之效果] The manufacturing method of the image display device of the present technology includes the following steps: a step of applying the above-mentioned photocurable resin composition on the surface of a light-transmitting component including a polarizing plate, or a step of applying the image display component to the surface of an image display component including a polarizing plate; a step of bonding the image display component to the light-transmitting component via the photocurable resin composition; and a step of curing the photocurable resin composition. [Effect of the invention]

根據本技術，於高溫環境下可抑制影像顯示裝置中之偏光板之變色。According to the present technology, the discoloration of the polarizing plate in the image display device can be suppressed in a high temperature environment.

＜光硬化性樹脂組成物＞ 本實施形態之光硬化性樹脂組成物其硬化後之厚度0.3 mm時之透濕度於40℃、相對濕度90%之環境下為400 g／m 2／day以上，較佳為500 g／m 2／day以上，更佳為600 g／m 2／day以上，進而較佳為700 g／m 2／day以上。又，光硬化性樹脂組成物之硬化後之透濕度之上限並無特別限定，例如可設為1000 g／m 2／day以下。此處，所謂透濕度係指依照JISZ0208，於40℃、相對濕度90%之環境下所測得之透濕度。藉由使用此種構成之光硬化性樹脂組成物，於高溫環境下可抑制例如圖1所示之影像顯示裝置1中之偏光板2之變色。 <Photocurable resin composition> The moisture permeability of the photocurable resin composition of this embodiment after curing at a thickness of 0.3 mm is 400 g/m 2 /day or more, preferably 500 g/m 2 /day or more, more preferably 600 g/m 2 /day or more, and further preferably 700 g/m 2 /day or more at 40°C and a relative humidity of 90% in an environment. In addition, the upper limit of the moisture permeability of the photocurable resin composition after curing is not particularly limited, and for example, it can be set to 1000 g/m 2 /day or less . Here, the so-called moisture permeability refers to the moisture permeability measured in an environment of 40°C and a relative humidity of 90% in accordance with JIS Z0208. By using the photocurable resin composition of this structure, the discoloration of the polarizing plate 2 in the image display device 1 shown in FIG. 1 can be suppressed in a high temperature environment.

光硬化性樹脂組成物之硬化物例如係指於大氣中藉由光照射，使光硬化性樹脂組成物以「進行光自由基聚合而獲得之硬化物整體之平均反應率（硬化率）成為90%以上（較佳為97%以上）」之方式硬化而成者。光硬化性樹脂組成物之硬化物整體之反應率係指對例如經成膜為厚度0.3 mm之硬化物進行測定所得之反應率。The cured product of a photocurable resin composition refers to, for example, a product cured by irradiation with light in the atmosphere so that the average reaction rate (curing rate) of the cured product as a whole obtained by photo-radical polymerization becomes 90% or more (preferably 97% or more)". The reaction rate of the cured product as a whole of the photocurable resin composition refers to the reaction rate measured for a cured product formed into a film with a thickness of 0.3 mm, for example.

此處，所謂反應率係以光照射後之(甲基)丙烯醯基之存在量相對於光照射前之光硬化性樹脂組成物層中之(甲基)丙烯醯基之存在量的比例（消耗量比例）所定義之數值。反應率之數值越大，表示反應進行程度越高。具體而言，反應率可藉由將光照射前之光硬化性樹脂組成物層之FT－IR測定圖中的距基準線之1640～1620 cm － 1之吸收峰高度（X）、及光照射後之光硬化性樹脂組成物層（硬化樹脂層）之FT－IR測定圖中的距基準線之1640～1620 cm － 1之吸收峰高度（Y）代入至下述式中而算出。 反應率（%）＝[（X－Y）／X]×100 Here, the so-called reaction rate is a value defined as the ratio of the amount of (meth)acryl groups present after light irradiation to the amount of (meth)acryl groups present in the photocurable resin composition layer before light irradiation (consumption ratio). The larger the value of the reaction rate, the higher the degree of progress of the reaction. Specifically, the reaction rate can be calculated by substituting the absorption peak height (X) at 1640 to 1620 cm - 1 from the reference line in the FT-IR measurement chart of the photocurable resin composition layer before light irradiation and the absorption peak height (Y) at 1640 to 1620 cm - 1 from the reference line in the FT-IR measurement chart of the photocurable resin composition layer (cured resin layer) after light irradiation into the following formula. Response rate (%) = [(X-Y)/X] × 100

圖1係表示影像顯示裝置之一例之剖面圖。圖2係表示影像顯示裝置中所使用之偏光板之一例之剖面圖。藉由將本實施形態之光硬化性樹脂組成物用於例如圖1所示之影像顯示裝置1中之硬化樹脂層6（參照圖1），可提高硬化樹脂層6之透濕度。可認為，藉此而變得容易將高溫環境下由偏光板2所產生之水分經由硬化樹脂層6排出至影像顯示裝置1之外部，從而可抑制由偏光板2（例如保護層9或保護層10）所產生之水分與偏光元件8接觸。因此，於高溫環境下可抑制影像顯示裝置1中之偏光板2之變色。FIG. 1 is a cross-sectional view showing an example of an image display device. FIG. 2 is a cross-sectional view showing an example of a polarizing plate used in the image display device. By using the photocurable resin composition of the present embodiment in the hardened resin layer 6 (refer to FIG. 1 ) in the image display device 1 shown in FIG. 1 , for example, the moisture permeability of the hardened resin layer 6 can be increased. It is considered that this makes it easy to discharge the moisture generated by the polarizing plate 2 in a high temperature environment through the hardened resin layer 6 to the outside of the image display device 1, thereby suppressing the moisture generated by the polarizing plate 2 (for example, the protective layer 9 or the protective layer 10) from contacting the polarizing element 8. Therefore, the discoloration of the polarizing plate 2 in the image display device 1 can be suppressed in a high temperature environment.

以下，對光硬化性樹脂組成物之構成例進行說明。光硬化性樹脂組成物只要為滿足上述硬化後之透濕度之條件之組成，則無特別限定。光硬化性樹脂組成物較佳為由提高硬化物之透濕度並且相容性良好之成分構成。光硬化性樹脂組成物較佳為含有例如(甲基)丙烯酸酯樹脂、單官能單體、光聚合起始劑、塑化劑及抗氧化劑。此處，(甲基)丙烯酸酯包含甲基丙烯酸酯與丙烯酸酯兩者。The following is an explanation of an example of the composition of a photocurable resin composition. The photocurable resin composition is not particularly limited as long as it satisfies the above-mentioned moisture permeability conditions after curing. The photocurable resin composition is preferably composed of components that improve the moisture permeability of the cured product and have good compatibility. The photocurable resin composition preferably contains, for example, a (meth)acrylate resin, a monofunctional monomer, a photopolymerization initiator, a plasticizer, and an antioxidant. Here, (meth)acrylate includes both methacrylate and acrylate.

[(甲基)丙烯酸酯樹脂] (甲基)丙烯酸酯樹脂係於1分子中具有2個以上之(甲基)丙烯醯基的光硬化性之樹脂（聚合物）。就相容性之觀點而言，(甲基)丙烯酸酯樹脂較佳為含有聚醚系(甲基)丙烯酸胺酯樹脂及聚酯系(甲基)丙烯酸胺酯樹脂之至少1種。(甲基)丙烯酸酯樹脂可為聚合物，亦可為低聚物。 [(Meth)acrylate resin] (Meth)acrylate resin is a photocurable resin (polymer) having two or more (meth)acrylic groups in one molecule. From the perspective of compatibility, the (meth)acrylate resin preferably contains at least one of a polyether-based (meth)acrylate amine resin and a polyester-based (meth)acrylate amine resin. The (meth)acrylate resin may be a polymer or an oligomer.

聚醚系(甲基)丙烯酸胺酯樹脂係於主鏈中具有聚醚骨架之(甲基)丙烯酸胺酯樹脂，作為具體例，可列舉具有聚醚骨架之(甲基)丙烯酸胺酯低聚物。作為市售品，例如可列舉：Artresin UN－6200、UN－6202、UN－6300、UN－6301（以上為根上工業公司製造）。Polyether (meth) acrylate amine resin is a (meth) acrylate amine resin having a polyether skeleton in the main chain. As a specific example, a (meth) acrylate amine oligomer having a polyether skeleton can be cited. As commercially available products, for example, Artresin UN-6200, UN-6202, UN-6300, and UN-6301 can be cited (all manufactured by Negami Industries).

聚酯系(甲基)丙烯酸胺酯樹脂係於主鏈中具有聚酯骨架之(甲基)丙烯酸胺酯樹脂，作為具體例，可列舉具有聚酯骨架之(甲基)丙烯酸胺酯低聚物。作為市售品，例如可列舉：Artresin UN－7600、UN－7700（以上為根上工業公司製造）。The polyester-based (meth) acrylate amine resin is a (meth) acrylate amine resin having a polyester skeleton in the main chain. As a specific example, a (meth) acrylate amine oligomer having a polyester skeleton can be cited. As commercially available products, for example, Artresin UN-7600 and UN-7700 (both manufactured by Negami Industries) can be cited.

(甲基)丙烯酸酯樹脂之重量平均分子量例如較佳為1000～100000，更佳為5000～40000，進而較佳為10000～25000。The weight average molecular weight of the (meth)acrylate resin is preferably 1,000 to 100,000, more preferably 5,000 to 40,000, and further preferably 10,000 to 25,000.

光硬化性樹脂組成物中，(甲基)丙烯酸酯樹脂之含量較佳為5～50質量%，更佳為20～45質量%。尤其是相對於(甲基)丙烯酸酯樹脂之合計含量，聚醚系(甲基)丙烯酸胺酯樹脂及聚酯系(甲基)丙烯酸胺酯樹脂之合計含量較佳為40質量%以上，更佳為50質量%以上，進而較佳為80質量%以上。(甲基)丙烯酸酯樹脂可單獨使用1種，亦可併用2種以上。於併用2種以上之(甲基)丙烯酸酯樹脂之情形時，較佳為其合計量滿足上述含量之範圍。In the photocurable resin composition, the content of the (meth)acrylate resin is preferably 5 to 50% by mass, more preferably 20 to 45% by mass. In particular, relative to the total content of the (meth)acrylate resin, the total content of the polyether (meth)acrylate amine resin and the polyester (meth)acrylate amine resin is preferably 40% by mass or more, more preferably 50% by mass or more, and further preferably 80% by mass or more. The (meth)acrylate resin may be used alone or in combination of two or more. When two or more (meth)acrylate resins are used in combination, it is preferred that the total content thereof satisfies the above content range.

[單官能單體] 單官能單體例如係光硬化性之(甲基)丙烯酸酯單體。又，就提高光硬化性樹脂組成物之硬化物之透濕度的觀點、及與其他成分之相容性之觀點而言，單官能單體較佳為含有含羥基之(甲基)丙烯酸酯單體及含雜環之(甲基)丙烯酸酯單體之至少1種。 [Monofunctional monomer] The monofunctional monomer is, for example, a photocurable (meth)acrylate monomer. In addition, from the viewpoint of improving the moisture permeability of the cured product of the photocurable resin composition and the compatibility with other components, the monofunctional monomer is preferably at least one of a hydroxyl-containing (meth)acrylate monomer and a heterocyclic (meth)acrylate monomer.

作為含羥基之(甲基)丙烯酸酯單體之具體例，例如可列舉：(甲基)丙烯酸2－羥基乙酯、(甲基)丙烯酸1－羥基乙酯、(甲基)丙烯酸2－羥基丙酯、(甲基)丙烯酸3－羥基丙酯、(甲基)丙烯酸1－羥基丙酯、(甲基)丙烯酸4－羥基丁酯、苯基縮水甘油醚(甲基)丙烯酸酯等。Specific examples of the hydroxyl group-containing (meth)acrylate monomer include 2-hydroxyethyl (meth)acrylate, 1-hydroxyethyl (meth)acrylate, 2-hydroxypropyl (meth)acrylate, 3-hydroxypropyl (meth)acrylate, 1-hydroxypropyl (meth)acrylate, 4-hydroxybutyl (meth)acrylate, and phenyl glycidyl ether (meth)acrylate.

含雜環之(甲基)丙烯酸酯單體中之雜環較佳為含有氧原子或氮原子之至少1種作為雜原子。雜環較佳為3～8員環，更佳為3～6員環。構成雜環之碳原子數較佳為2～6，更佳為3～5。雜環可為單環結構，亦可為多環結構。雜環亦可具有取代基。作為雜環亦可具有之取代基，可列舉甲基、乙基等。The heterocyclic ring in the (meth)acrylate monomer containing a heterocyclic ring preferably contains at least one of an oxygen atom or a nitrogen atom as a heteroatom. The heterocyclic ring is preferably a 3-8-membered ring, more preferably a 3-6-membered ring. The number of carbon atoms constituting the heterocyclic ring is preferably 2-6, more preferably 3-5. The heterocyclic ring may be a monocyclic structure or a polycyclic structure. The heterocyclic ring may also have a substituent. Examples of the substituent that the heterocyclic ring may have include a methyl group, an ethyl group, and the like.

作為含雜環之(甲基)丙烯酸酯單體，較佳為含有選自由嗎福林環、呋喃環、二氧雜環戊烷環所組成之群中之雜環的(甲基)丙烯酸酯。作為具體例，可列舉：丙烯醯基嗎福林、(甲基)丙烯酸四氫糠酯、(甲基)丙烯酸(2－甲基－2－乙基－1,3－二氧雜環戊烷－4－基)甲酯等。As the (meth)acrylate monomer containing a heterocyclic ring, a (meth)acrylate containing a heterocyclic ring selected from the group consisting of a pyrrolidine ring, a furan ring, and a dioxolane ring is preferred. Specific examples include acryloylpyrrolidine, tetrahydrofurfuryl (meth)acrylate, and (2-methyl-2-ethyl-1,3-dioxolane-4-yl)methyl (meth)acrylate.

光硬化性樹脂組成物中，單官能單體之含量較佳為10～40質量%，更佳為20～40質量%。尤其是相對於單官能單體之合計含量，含羥基之(甲基)丙烯酸酯單體及含雜環之(甲基)丙烯酸酯單體之合計含量較佳為40質量%以上，更佳為50質量%以上，進而較佳為80質量%以上。單官能單體可單獨使用1種，亦可併用2種以上。於併用2種以上之單官能單體之情形時，較佳為其合計量滿足上述含量之範圍。In the photocurable resin composition, the content of the monofunctional monomer is preferably 10-40% by mass, more preferably 20-40% by mass. In particular, relative to the total content of the monofunctional monomers, the total content of the hydroxyl-containing (meth)acrylate monomer and the heterocyclic (meth)acrylate monomer is preferably 40% by mass or more, more preferably 50% by mass or more, and further preferably 80% by mass or more. The monofunctional monomer may be used alone or in combination of two or more. When two or more monofunctional monomers are used in combination, it is preferred that the total content thereof satisfies the above content range.

[光聚合起始劑] 光聚合起始劑較佳為使用光自由基聚合起始劑，更佳為含有烷基苯酮系光聚合起始劑、及醯基氧化膦系光聚合起始劑之至少1種。作為烷基苯酮系光聚合起始劑，可使用1－羥基環己基苯基酮（Irgacure 184，BASF公司製造）、2－羥基－1－{4－[4－(2－羥基－2－甲基－丙醯基)苄基]苯基}－2－甲基－1－丙烷－1－酮（Irgacure 127，BASF公司製造）等。作為醯基氧化膦系光聚合起始劑，可使用2,4,6－三甲基苯甲醯基二苯基氧化膦（Irgacure TPO，BASF公司製造）等。除此以外，作為光聚合起始劑，亦可使用二苯甲酮、苯乙酮等。 [Photopolymerization initiator] The photopolymerization initiator is preferably a photoradical polymerization initiator, and more preferably contains at least one of an alkylphenone-based photopolymerization initiator and an acylphosphine oxide-based photopolymerization initiator. As the alkylphenone-based photopolymerization initiator, 1-hydroxycyclohexylphenyl ketone (Irgacure 184, manufactured by BASF), 2-hydroxy-1-{4-[4-(2-hydroxy-2-methyl-propionyl)benzyl]phenyl}-2-methyl-1-propane-1-one (Irgacure 127, manufactured by BASF), etc. can be used. As the acylphosphine oxide-based photopolymerization initiator, 2,4,6-trimethylbenzyldiphenylphosphine oxide (Irgacure TPO, manufactured by BASF), etc. can be used. In addition, benzophenone, acetophenone, etc. can also be used as photopolymerization initiators.

相對於自由基聚合性成分（上述(甲基)丙烯酸酯樹脂及單官能單體）之合計100質量份，光聚合起始劑之含量較佳為0.1～5質量份，更佳為0.2～3質量份。藉由設為此種範圍，可更有效地防止於光照射時變得硬化不足之情況，並且更有效地防止由開裂引起之釋氣之增加。光聚合起始劑可單獨使用1種，亦可併用2種以上。於併用2種以上之光聚合起始劑之情形時，較佳為其合計量滿足上述範圍。The content of the photopolymerization initiator is preferably 0.1 to 5 parts by mass, more preferably 0.2 to 3 parts by mass, relative to 100 parts by mass of the total free radical polymerizable components (the above-mentioned (meth)acrylate resin and monofunctional monomer). By setting it within such a range, insufficient curing during light irradiation can be more effectively prevented, and the increase of outgassing caused by cracking can be more effectively prevented. The photopolymerization initiator can be used alone or in combination of two or more. When two or more photopolymerization initiators are used in combination, it is preferred that the total amount meets the above range.

[塑化劑] 塑化劑例如其本身不會因光照射而發生光硬化，對光硬化後之硬化樹脂層賦予柔軟性。就與其他成分之相容性之觀點而言，塑化劑較佳為含有聚醚系多元醇及聚酯系多元醇之至少1種。 [Plasticizer] For example, the plasticizer itself does not undergo photohardening due to light irradiation, but imparts softness to the hardened resin layer after photohardening. From the perspective of compatibility with other components, the plasticizer preferably contains at least one of a polyether polyol and a polyester polyol.

作為聚醚系多元醇，例如可使用藉由對乙二醇、丙二醇、甘油、三羥甲基丙烷等起始劑加成環氧烷並進行聚合而獲得之通常之聚醚多元醇。環氧烷並無特別限定，例如可列舉環氧乙烷、環氧丙烷、環氧丁烷等。As the polyether polyol, for example, a general polyether polyol obtained by adding an alkylene oxide to an initiator such as ethylene glycol, propylene glycol, glycerin, or trihydroxymethylpropane and polymerizing the alkylene oxide can be used. The alkylene oxide is not particularly limited, and examples thereof include ethylene oxide, propylene oxide, and butylene oxide.

作為聚醚系多元醇之市售品，例如可列舉ADEKA公司製造之「Adeka Polyether」。更具體而言，可列舉：作為聚丙二醇之「P系列」、作為雙酚A之聚丙二醇加成物之「BPX系列」、作為甘油之聚丙二醇加成物之「G系列」、作為三羥甲基丙烷之聚丙二醇加成物之「T系列」、作為乙二胺之聚丙二醇加成物之「EDP系列」、作為山梨糖醇之聚丙二醇加成物之「SP系列」、作為環氧乙烷與環氧丙烷之無規共聚物之「PR系列」、對丙二醇加成環氧丙烷－環氧乙烷嵌段共聚物而成之「CM系列」等。Examples of commercially available polyether polyols include "Adeka Polyether" manufactured by ADEKA Corporation. More specifically, the polyether polyols include the "P series" of polypropylene glycol, the polypropylene glycol adduct of bisphenol A, the polypropylene glycol adduct of glycerol, the polypropylene glycol adduct of trihydroxymethylpropane, the polypropylene glycol adduct of ethylenediamine, the polypropylene glycol adduct of sorbitol, the random copolymer of ethylene oxide and propylene oxide, the CM series of block copolymers of propylene oxide and ethylene oxide added to propylene glycol, and the like.

聚醚系多元醇之數量平均分子量較佳為例如500～8000，更佳為1000～5000。The number average molecular weight of the polyether polyol is preferably, for example, 500 to 8,000, more preferably 1,000 to 5,000.

作為聚酯系多元醇，例如可使用藉由將二羧酸與二醇進行聚縮合而獲得之通常之聚酯多元醇。作為二羧酸，例如可列舉：己二酸、壬二酸、癸二酸、十二烷二酸等脂肪族羧酸；對苯二甲酸、間苯二甲酸等芳香族羧酸等。作為二醇，例如可列舉：乙二醇、1,4－丁二醇、1,6－己二醇、1,9－壬二醇、二乙二醇等直鏈結構之二醇；1,2－丙二醇、1,3－丁二醇、2－甲基－1,3－丙二醇、新戊二醇、3－甲基－1,5－戊二醇、2,2－二甲基－1,3－丙二醇、2－甲基－1,8－辛二醇等。As polyester polyols, for example, ordinary polyester polyols obtained by polycondensing dicarboxylic acids and diols can be used. Examples of dicarboxylic acids include aliphatic carboxylic acids such as adipic acid, azelaic acid, sebacic acid, and dodecanedioic acid; aromatic carboxylic acids such as terephthalic acid and isophthalic acid; and the like. Examples of diols include linear diols such as ethylene glycol, 1,4-butanediol, 1,6-hexanediol, 1,9-nonanediol, and diethylene glycol; and 1,2-propylene glycol, 1,3-butylene glycol, 2-methyl-1,3-propylene glycol, neopentyl glycol, 3-methyl-1,5-pentanediol, 2,2-dimethyl-1,3-propylene glycol, and 2-methyl-1,8-octanediol.

作為聚酯系多元醇之市售品，可列舉：「P－1010」、「P－2010」、「P－3010」、「P－2050」（以上為Kuraray公司製造），「OD－X－102」、「OD－X－668」、「OD－X－2068」（以上為DIC公司製造），「NS－2400」、「YT－101」、「F7－67」、「#50」、「F1212－29」、「YG－108」、「V14－90」、「Y65－55」（以上為ADEKA公司製造）等。Commercially available products of polyester polyols include: "P-1010", "P-2010", "P-3010", "P-2050" (all manufactured by Kuraray), "OD-X-102", "OD-X-668", "OD-X-2068" (all manufactured by DIC), "NS-2400", "YT-101", "F7-67", "#50", "F1212-29", "YG-108", "V14-90", "Y65-55" (all manufactured by ADEKA), etc.

聚酯系多元醇之數量平均分子量例如較佳為500～8000，更佳為1000～5000。The number average molecular weight of the polyester polyol is preferably 500 to 8,000, and more preferably 1,000 to 5,000.

光硬化性樹脂組成物中，塑化劑之含量較佳為15～50質量%，更佳為25～45質量%。尤其是相對於塑化劑之合計含量，聚醚系多元醇及聚酯系多元醇之合計含量較佳為40質量%以上，更佳為50質量%以上，進而較佳為80質量%以上。塑化劑可單獨使用1種，亦可併用2種以上。於併用2種以上之塑化劑之情形時，較佳為其合計量滿足上述含量之範圍。In the photocurable resin composition, the content of the plasticizer is preferably 15-50% by mass, more preferably 25-45% by mass. In particular, relative to the total content of the plasticizer, the total content of the polyether polyol and the polyester polyol is preferably 40% by mass or more, more preferably 50% by mass or more, and further preferably 80% by mass or more. The plasticizer may be used alone or in combination of two or more. When two or more plasticizers are used in combination, it is preferred that the total content thereof satisfies the above content range.

[抗氧化劑] 抗氧化劑例如係為了防止光硬化性樹脂組成物之變色而使用。抗氧化劑並無特別限定，可使用公知之抗氧化劑。例如可列舉具有受阻酚結構之化合物、具有受阻胺結構之化合物、具有硫醚結構之化合物等，較佳為具有受阻酚結構之化合物。 [Antioxidant] Antioxidants are used, for example, to prevent discoloration of photocurable resin compositions. The antioxidant is not particularly limited, and known antioxidants can be used. For example, compounds with a hindered phenol structure, compounds with a hindered amine structure, compounds with a thioether structure, etc. can be listed, and compounds with a hindered phenol structure are preferred.

關於作為抗氧化劑之一例的具有受阻酚結構之化合物之市售品，可列舉：「IRGANOX1010」、「IRGANOX1035」、「IRGANOX1076」、「IRGANOX1098」、「IRGANOX1135」、「IRGANOX1330」、「IRGANOX1726」、「IRGANOX1425WL」、「IRGANOX1520L」、「IRGANOX245」、「IRGANOX259」、「IRGANOX3114」、「IRGANOX565」、「IRGAMOD295」（以上為BASF公司製造）等。As an example of an antioxidant, commercially available products of a compound having a hindered phenol structure include: "IRGANOX 1010", "IRGANOX 1035", "IRGANOX 1076", "IRGANOX 1098", "IRGANOX 1135", "IRGANOX 1330", "IRGANOX 1726", "IRGANOX 1425WL", "IRGANOX 1520L", "IRGANOX 245", "IRGANOX 259", "IRGANOX 3114", "IRGANOX 565", and "IRGAMOD 295" (all manufactured by BASF).

光硬化性樹脂組成物中，抗氧化劑之含量較佳為0.1～10質量份，更佳為0.5～3質量份。抗氧化劑可單獨使用1種，亦可併用2種以上。於併用2種以上之抗氧化劑之情形時，較佳為其合計量滿足上述含量之範圍。In the photocurable resin composition, the content of the antioxidant is preferably 0.1 to 10 parts by weight, more preferably 0.5 to 3 parts by weight. The antioxidant may be used alone or in combination of two or more. When two or more antioxidants are used in combination, it is preferred that the total amount thereof meets the above content range.

[其他成分] 光硬化性樹脂組成物亦可於不損及「在高溫環境下抑制影像顯示裝置中之偏光板之變色」的效果之範圍內，進一步含有上述成分以外之其他成分。作為其他成分，例如可列舉增黏劑等。 [Other components] The photocurable resin composition may further contain other components other than the above components within the range that does not impair the effect of "suppressing the discoloration of the polarizing plate in the image display device under a high temperature environment". Examples of other components include thickeners, etc.

光硬化性樹脂組成物較佳為於常溫下為液狀。例如光硬化性樹脂組成物較佳為藉由B型黏度計測得之25℃之黏度顯示出0.01～100 Pa•s。The photocurable resin composition is preferably liquid at room temperature. For example, the photocurable resin composition preferably has a viscosity of 0.01 to 100 Pa•s at 25° C. as measured by a B-type viscometer.

光硬化性樹脂組成物較佳為可見光區域之穿透率為90%以上。藉此，於形成硬化樹脂層時，可使形成於影像顯示構件之影像之視認性更良好。The light-curing resin composition preferably has a transmittance of 90% or more in the visible light region. Thus, when the cured resin layer is formed, the visibility of the image formed on the image display component can be improved.

光硬化性樹脂組成物之折射率較佳為與影像顯示構件或透光性構件之折射率大致相等，例如較佳為1.45以上且1.55以下。藉此，可提高來自影像顯示構件之影像光之亮度或對比度，提高視認性。The refractive index of the photocurable resin composition is preferably substantially equal to the refractive index of the image display component or the light-transmitting component, for example, preferably 1.45 or more and 1.55 or less. This can increase the brightness or contrast of the image light from the image display component and improve visibility.

光硬化性樹脂組成物可藉由依照公知之混合方法將上述各成分均勻地混合而製備。The photocurable resin composition can be prepared by uniformly mixing the above-mentioned components according to a known mixing method.

本實施形態之光硬化性樹脂組成物藉由硬化後之厚度0.3 mm時之透濕度於40℃、相對濕度90%之環境下為400 g／m 2／day以上，而於高溫環境下可抑制影像顯示裝置1中之偏光板2之變色。 The photocurable resin composition of this embodiment can suppress the discoloration of the polarizing plate 2 in the image display device 1 in a high temperature environment by having a moisture permeability of 400 g/m 2 /day or more at a relative humidity of 90% at 40°C when the thickness is 0.3 mm after curing.

＜影像顯示裝置＞ 本實施形態之影像顯示裝置1例如係如圖1所示，依序具備包含偏光板2之影像顯示構件4、硬化樹脂層6及透光性構件5。硬化樹脂層6於厚度0.3 mm時之透濕度於40℃、相對濕度90%之環境下為400 g／m 2／day以上。藉由使用如此般透濕度較高之硬化樹脂層6，於高溫環境下可抑制偏光板2之變色。 <Image display device> The image display device 1 of this embodiment is, for example, as shown in FIG. 1, and includes an image display component 4 including a polarizing plate 2, a hardened resin layer 6, and a light-transmitting component 5 in this order. The moisture permeability of the hardened resin layer 6 at a thickness of 0.3 mm is 400 g/ m2 /day or more in an environment of 40°C and a relative humidity of 90%. By using such a hardened resin layer 6 with a high moisture permeability, the discoloration of the polarizing plate 2 can be suppressed in a high temperature environment.

影像顯示構件4例如係於影像顯示單元3之視認側表面形成有偏光板2之影像顯示面板。影像顯示構件4例如為液晶顯示面板、有機EL顯示面板、觸控面板等。此處，所謂觸控面板意指將如液晶顯示面板般之顯示元件與如觸控板般之位置輸入裝置組合而成之影像顯示、輸入面板。The image display component 4 is, for example, an image display panel having a polarizing plate 2 formed on the viewing side surface of the image display unit 3. The image display component 4 is, for example, a liquid crystal display panel, an organic EL display panel, a touch panel, etc. Here, the so-called touch panel means an image display and input panel that combines a display element such as a liquid crystal display panel with a position input device such as a touch panel.

影像顯示單元3例如可列舉液晶單元或有機EL單元。作為液晶單元，例如可列舉反射型液晶單元、穿透型液晶單元等。The image display unit 3 may be, for example, a liquid crystal unit or an organic EL unit. Examples of the liquid crystal unit include a reflective liquid crystal unit and a transmissive liquid crystal unit.

偏光板2例如係如圖2所示，為具備偏光元件8、設置於偏光元件8之一面之保護層9、及設置於偏光元件8之另一面之保護層10的積層體。偏光板2亦可於偏光元件8與保護層9之間、及偏光元件8與保護層10之間進一步具備未圖示之接著層。又，偏光板2亦可進一步具備偏光元件8及保護層9、10以外之其他光學層（例如相位差板）。The polarizing plate 2 is, for example, a laminate having a polarizing element 8, a protective layer 9 disposed on one surface of the polarizing element 8, and a protective layer 10 disposed on the other surface of the polarizing element 8, as shown in FIG. 2 . The polarizing plate 2 may further include an unillustrated bonding layer between the polarizing element 8 and the protective layer 9, and between the polarizing element 8 and the protective layer 10. In addition, the polarizing plate 2 may further include other optical layers (e.g., a phase difference plate) in addition to the polarizing element 8 and the protective layers 9 and 10.

作為偏光元件8，例如可使用藉由對聚乙烯醇系樹脂實施利用二色性物質（例如碘化合物）之染色處理及延伸處理而獲得的周知之構成之偏光板。As the polarizing element 8, for example, a polarizing plate having a known structure obtained by subjecting a polyvinyl alcohol-based resin to a dyeing treatment using a dichroic substance (such as an iodine compound) and a stretching treatment can be used.

作為保護層9、10，例如可使用由透明性、機械強度、熱穩定性、水分阻斷性、等向性等優異之熱塑性樹脂所構成之膜。作為此種熱塑性樹脂，例如可列舉：三乙醯纖維素（TAC）等纖維素樹脂、聚對苯二甲酸乙二酯（PET）或聚萘二甲酸乙二酯（PEN）等聚酯樹脂、聚醚碸樹脂、聚碸樹脂、聚碳酸酯樹脂、聚醯胺樹脂、聚醯亞胺樹脂、聚烯烴樹脂、(甲基)丙烯酸樹脂、環狀聚烯烴樹脂、聚芳酯樹脂、聚苯乙烯樹脂、聚乙烯醇樹脂、及該等之混合物。As the protective layers 9 and 10, for example, a film made of a thermoplastic resin having excellent transparency, mechanical strength, thermal stability, moisture barrier property, isotropy, etc. can be used. Examples of such thermoplastic resins include cellulose resins such as triacetyl cellulose (TAC), polyester resins such as polyethylene terephthalate (PET) and polyethylene naphthalate (PEN), polyether resins, polyester resins, polycarbonate resins, polyamide resins, polyimide resins, polyolefin resins, (meth)acrylic resins, cyclic polyolefin resins, polyarylate resins, polystyrene resins, polyvinyl alcohol resins, and mixtures thereof.

透光性構件5只要具有使形成於影像顯示構件4之影像可被視認之透光性即可。例如可列舉：玻璃、丙烯酸樹脂、聚對苯二甲酸乙二酯、聚萘二甲酸乙二酯、聚碳酸酯等之板狀材料或片狀材料。亦可對該等材料之單面或兩面實施硬塗處理、抗反射處理等。透光性構件5之厚度或彈性模數等物性可根據使用目的而適當決定。又，透光性構件5不僅包括如上述般之構成相對簡單之構件，亦包括如觸控面板模組般之將各種片材或膜材積層而成者。The light-transmitting member 5 only needs to have light-transmitting properties that allow the image formed on the image display member 4 to be visible. For example, plate-like or sheet-like materials such as glass, acrylic resin, polyethylene terephthalate, polyethylene naphthalate, and polycarbonate can be listed. One or both sides of these materials can also be hard-coated or anti-reflected. The physical properties such as the thickness or elastic modulus of the light-transmitting member 5 can be appropriately determined according to the purpose of use. In addition, the light-transmitting member 5 includes not only members with relatively simple structures as described above, but also those formed by laminating various sheets or films such as touch panel modules.

於透光性構件5之周緣部，亦可為了提高影像之對比度而設置遮光層7。遮光層7例如可藉由網版印刷法等塗佈經著色成黑色等之塗料並加以乾燥、硬化而形成。遮光層7之厚度通常為5～100 μm。A light shielding layer 7 may be provided around the periphery of the light-transmitting member 5 to improve the contrast of the image. The light shielding layer 7 may be formed by, for example, applying a coating colored in black or the like by screen printing, drying, and curing the coating. The thickness of the light shielding layer 7 is usually 5 to 100 μm.

硬化樹脂層6係上述光硬化性樹脂組成物之硬化物。硬化樹脂層6於厚度0.3 mm時之透濕度於40℃、相對濕度90%之環境下為400 g／m 2／day以上。硬化樹脂層6之透濕度之較佳範圍與上述光硬化性樹脂組成物之硬化物之透濕度之範圍相同。 The hardened resin layer 6 is a hardened product of the above-mentioned light-curing resin composition. The moisture permeability of the hardened resin layer 6 at a thickness of 0.3 mm is 400 g/m 2 /day or more at 40°C and a relative humidity of 90%. The preferred range of the moisture permeability of the hardened resin layer 6 is the same as the range of the moisture permeability of the hardened product of the above-mentioned light-curing resin composition.

硬化樹脂層6較佳為可見光區域之穿透率為90%以上。藉由滿足此種範圍，可使形成於影像顯示構件4之影像之視認性更良好。硬化樹脂層6之折射率較佳為與影像顯示構件4或透光性構件5之折射率大致相等。硬化樹脂層6之折射率例如較佳為1.45以上且1.55以下。藉此，可提高來自影像顯示構件4之影像光之亮度或對比度，從而提高視認性。硬化樹脂層6之厚度例如可設為25～200 μm左右。The hardened resin layer 6 preferably has a transmittance of 90% or more in the visible light region. By satisfying this range, the visibility of the image formed on the image display component 4 can be improved. The refractive index of the hardened resin layer 6 is preferably approximately equal to the refractive index of the image display component 4 or the light-transmitting component 5. The refractive index of the hardened resin layer 6 is preferably, for example, greater than 1.45 and less than 1.55. Thereby, the brightness or contrast of the image light from the image display component 4 can be increased, thereby improving visibility. The thickness of the hardened resin layer 6 can be set to, for example, about 25 to 200 μm.

本實施形態之影像顯示裝置1依序具備包含偏光板2之影像顯示構件4、硬化樹脂層6及透光性構件5，且硬化樹脂層6之厚度0.3 mm時之透濕度於40℃、相對濕度90%之環境下為400 g／m 2／day以上。如此，影像顯示裝置1具備透濕度較高之硬化樹脂層6，藉此於高溫環境下可抑制偏光板2之變色。 The image display device 1 of this embodiment has an image display component 4 including a polarizing plate 2, a hardened resin layer 6, and a light-transmitting component 5 in order, and the moisture permeability of the hardened resin layer 6 when the thickness is 0.3 mm is 400 g/m 2 /day or more in an environment of 40°C and a relative humidity of 90%. In this way, the image display device 1 has a hardened resin layer 6 with a high moisture permeability, thereby suppressing the discoloration of the polarizing plate 2 in a high temperature environment.

＜影像顯示裝置之製造方法＞ 以下，對作為影像顯示裝置之製造方法之具體例的第1實施形態及第2實施形態進行說明。再者，圖式中相同之圖編號表示相同之構成要素。 <Manufacturing method of image display device> The following describes the first embodiment and the second embodiment as specific examples of the manufacturing method of the image display device. In addition, the same figure numbers in the drawings represent the same components.

[第1實施形態] 第1實施形態之製造方法包括下述步驟：將光硬化性樹脂組成物塗佈於透光性構件之表面之步驟（A）；介隔光硬化性樹脂組成物將影像顯示構件與透光性構件貼合之步驟（B）；及使光硬化性樹脂組成物硬化之步驟（C）。 [First embodiment] The manufacturing method of the first embodiment includes the following steps: a step of applying a photocurable resin composition on the surface of a light-transmitting component (A); a step of bonding an image display component to the light-transmitting component via the photocurable resin composition (B); and a step of curing the photocurable resin composition (C).

[步驟（A）] 於步驟（A）中，例如像圖3所示，於透光性構件5之形成有遮光層7之側之表面塗佈光硬化性樹脂組成物11。光硬化性樹脂組成物11與上述光硬化性樹脂組成物為相同含義，較佳範圍亦相同。 [Step (A)] In step (A), for example, as shown in FIG3 , a photocurable resin composition 11 is applied to the surface of the light-transmitting member 5 on the side where the light-shielding layer 7 is formed. The photocurable resin composition 11 has the same meaning as the above-mentioned photocurable resin composition, and the preferred range is also the same.

[步驟（B）] 於步驟（B）中，例如像圖4所示，於影像顯示構件4之偏光板2側介隔光硬化性樹脂組成物11而貼合透光性構件5。藉此，於偏光板2與透光性構件5之間形成光硬化性樹脂組成物層12。 [Step (B)] In step (B), for example, as shown in FIG. 4 , the light-shielding curable resin composition 11 is interposed on the polarizing plate 2 of the image display component 4 and the light-transmitting component 5 is bonded. Thus, a light-shielding resin composition layer 12 is formed between the polarizing plate 2 and the light-transmitting component 5.

[步驟（C）] 於步驟（C）中，例如像圖5所示，對光硬化性樹脂組成物層12照射光（較佳為紫外線）而使光硬化性樹脂組成物層12硬化。藉此，獲得如圖1所示般影像顯示構件4與透光性構件5介隔硬化樹脂層6積層而成之影像顯示裝置1。 [Step (C)] In step (C), for example, as shown in FIG5 , the photocurable resin composition layer 12 is irradiated with light (preferably ultraviolet light) to cure the photocurable resin composition layer 12. Thus, an image display device 1 is obtained in which the image display component 4 and the light-transmitting component 5 are laminated with the curable resin layer 6 interposed therebetween as shown in FIG1 .

光照射較佳為以硬化樹脂層6之反應率（硬化率）成為90%以上之方式進行，更佳為以成為95%以上之方式進行。藉由滿足此種範圍，可使形成於影像顯示構件4之影像之視認性良好。硬化樹脂層6之反應率與上述反應率之含義相同。The light irradiation is preferably performed in such a manner that the reaction rate (hardening rate) of the hardened resin layer 6 becomes 90% or more, and more preferably, it is performed in such a manner that it becomes 95% or more. By satisfying this range, the visibility of the image formed on the image display member 4 can be improved. The reaction rate of the hardened resin layer 6 has the same meaning as the above reaction rate.

用於光照射之光源之種類、功率、照度、累計光量等並無特別限制，例如可採用公知之利用紫外線照射之(甲基)丙烯酸酯之光自由基聚合製程條件。There is no particular limitation on the type, power, illumination, and accumulated light quantity of the light source used for light irradiation. For example, the known photo-radical polymerization process conditions of (meth)acrylate using ultraviolet irradiation can be adopted.

再者，於第1實施形態中，於透光性構件5之表面塗佈光硬化性樹脂組成物11，但並不限定於該例。例如亦可於步驟（A）中，在影像顯示構件4之表面塗佈光硬化性樹脂組成物11。Furthermore, in the first embodiment, the photocurable resin composition 11 is coated on the surface of the light-transmitting member 5, but the present invention is not limited to this example. For example, in step (A), the photocurable resin composition 11 may be coated on the surface of the image display member 4.

[第2實施形態] 第2實施形態之製造方法包括：將光硬化性樹脂組成物塗佈於透光性構件之表面之步驟（AA）；對光硬化性樹脂組成物層進行光照射而進行暫時硬化之步驟（BB）；介隔暫時硬化樹脂層將影像顯示構件與透光性構件貼合之步驟（CC）；及使暫時硬化樹脂層正式硬化之步驟（DD）。 [Second embodiment] The manufacturing method of the second embodiment includes: a step of applying a photocurable resin composition on the surface of a light-transmitting member (AA); a step of temporarily curing the photocurable resin composition layer by irradiating light (BB); a step of bonding the image display member and the light-transmitting member via the temporarily curable resin layer (CC); and a step of formally curing the temporarily curable resin layer (DD).

[步驟（AA）] 於步驟（AA）中，例如係如圖6所示，於透光性構件5之表面塗佈光硬化性樹脂組成物11，形成光硬化性樹脂組成物層12。具體而言，較佳為於包括遮光層7之表面在內的透光性構件5之形成有遮光層7之側之整個表面，以變得平坦之方式塗佈光硬化性樹脂組成物11，使其不產生階差。光硬化性樹脂組成物層12之厚度例如較佳為遮光層7之厚度之1.2～50倍之厚度，更佳為2～30倍之厚度。光硬化性樹脂組成物11之塗佈只要以獲得必需厚度之方式進行即可，可進行1次，亦可進行多次。 [Step (AA)] In step (AA), for example, as shown in FIG. 6 , a photocurable resin composition 11 is applied to the surface of the light-transmitting member 5 to form a photocurable resin composition layer 12. Specifically, it is preferred that the photocurable resin composition 11 is applied to the entire surface of the light-transmitting member 5 including the surface of the light-shielding layer 7 on the side where the light-shielding layer 7 is formed so as to be flat without generating a step difference. The thickness of the photocurable resin composition layer 12 is preferably 1.2 to 50 times the thickness of the light-shielding layer 7, and more preferably 2 to 30 times the thickness. The photocurable resin composition 11 can be applied in a manner to obtain the required thickness, and can be applied once or multiple times.

[步驟（BB）] 於步驟（BB）中，例如像圖7所示，對步驟（AA）中所形成之光硬化性樹脂組成物層12照射光（較佳為紫外線）而進行暫時硬化，如圖8所示般形成暫時硬化樹脂層13。 [Step (BB)] In step (BB), for example, as shown in FIG. 7 , the photocurable resin composition layer 12 formed in step (AA) is irradiated with light (preferably ultraviolet light) to temporarily cure, thereby forming a temporarily cured resin layer 13 as shown in FIG. 8 .

光硬化性樹脂組成物層12之暫時硬化較佳為以暫時硬化樹脂層13之反應率成為10～80%之方式進行，更佳為以成為40～80%之方式進行。關於光照射之條件，只要可以「暫時硬化樹脂層13之反應率較佳為成為10～80%」之方式進行硬化，則無特別限制。The temporary curing of the photocurable resin composition layer 12 is preferably performed so that the reaction rate of the temporary curing resin layer 13 becomes 10 to 80%, and more preferably 40 to 80%. There is no particular limitation on the conditions for light irradiation as long as the temporary curing resin layer 13 can be cured so that the reaction rate is preferably 10 to 80%.

[步驟（CC）] 於步驟（CC）中，例如像圖9所示，介隔暫時硬化樹脂層13而將透光性構件5貼合於影像顯示構件4。貼合例如可藉由使用公知之壓接裝置於10～80℃下加壓來進行。 [Step (CC)] In step (CC), for example, as shown in FIG. 9 , the light-transmitting member 5 is bonded to the image display member 4 via the temporarily cured resin layer 13. The bonding can be performed by applying pressure at 10 to 80° C. using a known press-fitting device, for example.

[步驟（DD）] 於步驟（DD）中，例如像圖10所示，對暫時硬化樹脂層13照射光（較佳為紫外線）而使其正式硬化。藉此，可獲得影像顯示構件4與透光性構件5介隔硬化樹脂層6積層而成之影像顯示裝置1（參照圖1）。 [Step (DD)] In step (DD), for example, as shown in FIG. 10 , the temporarily hardened resin layer 13 is irradiated with light (preferably ultraviolet light) to formally harden it. In this way, an image display device 1 is obtained in which the image display component 4 and the light-transmitting component 5 are laminated via the hardened resin layer 6 (see FIG. 1 ).

暫時硬化樹脂層13之正式硬化較佳為以硬化樹脂層6之反應率成為90%以上之方式進行，更佳為以成為95%以上之方式進行。關於正式硬化之條件，只要可以「硬化樹脂層6之反應率成為90%以上」之方式進行硬化，則無特別限制。The final curing of the temporary curing resin layer 13 is preferably performed in such a way that the reaction rate of the curing resin layer 6 becomes 90% or more, and more preferably in such a way that it becomes 95% or more. There is no particular limitation on the conditions for the final curing as long as the curing can be performed in such a way that the reaction rate of the curing resin layer 6 becomes 90% or more.

再者，於第2實施形態中，對在透光性構件5之形成有遮光層7之側之表面塗佈光硬化性樹脂組成物11之例進行了說明，但亦可於影像顯示構件4之表面塗佈光硬化性樹脂組成物11。Furthermore, in the second embodiment, the example in which the photocurable resin composition 11 is coated on the surface of the light-transmitting member 5 on which the light-shielding layer 7 is formed is described. However, the photocurable resin composition 11 may also be coated on the surface of the image display member 4.

於上述影像顯示裝置之製造方法中，對使用具有遮光層7之透光性構件5之情形進行了說明，但並不限定於該例。例如亦可使用不具有遮光層7之透光性構件而製作影像顯示裝置。In the above-mentioned method for manufacturing an image display device, the case where the light-transmitting member 5 having the light-shielding layer 7 is used is described, but the invention is not limited to this example. For example, an image display device may be manufactured using a light-transmitting member without the light-shielding layer 7.

又，作為影像顯示裝置之製造方法，亦可採用所謂圍堰填充（dam and fill）製程。圍堰填充製程例如係以下方法：使用圍堰材於影像顯示構件之表面形成填充材之塗佈區域，於該塗佈區域塗佈填充材並介隔填充材將影像顯示構件與透光性構件貼合，對填充材照射光而形成硬化樹脂層。 實施例 In addition, as a manufacturing method of the image display device, a so-called dam and fill process can also be adopted. The dam and fill process is, for example, the following method: using a dam material to form a coating area of a filler material on the surface of the image display component, coating the filler material on the coating area and bonding the image display component to the light-transmitting component through the filler material, and irradiating the filler material with light to form a hardened resin layer. Example

以下，對本技術之實施例進行說明。The following describes an example of the present technology.

[(甲基)丙烯酸酯樹脂] Artresin UN－6202：聚醚骨架丙烯酸胺酯低聚物，根上工業公司製造 Artresin UN－7700：聚酯骨架丙烯酸胺酯低聚物，根上工業公司製造 TE－2000：聚丁二烯骨架甲基丙烯酸胺酯低聚物，日本曹達公司製造 [(Meth)acrylate resin] Artresin UN-6202: Polyether skeleton acrylate amine oligomer, manufactured by Negami Industries Artresin UN-7700: Polyester skeleton acrylate amine oligomer, manufactured by Negami Industries TE-2000: Polybutadiene skeleton methacrylate amine oligomer, manufactured by Nippon Soda Co., Ltd.

[單官能單體] 4HBA：丙烯酸4－羥基丁酯，大阪有機化學工業公司製造 ACMO：丙烯醯基嗎福林，KJ Chemicals公司製造 Viscoat#150：丙烯酸四氫糠酯，大阪有機化學工業公司製造 MEDOL－10：丙烯酸(2－甲基－2－乙基－1,3－二氧雜環戊烷－4－基)甲酯，大阪有機化學工業公司製造 New Frontier PGA：苯基縮水甘油醚丙烯酸酯，第一工業製藥公司製造 SR506：丙烯酸異莰酯，Arkema公司製造 [Monofunctional monomers] 4HBA: 4-Hydroxybutyl acrylate, manufactured by Osaka Organic Chemical Industry Co., Ltd. ACMO: Acryloyl isoflurane, manufactured by KJ Chemicals Co., Ltd. Viscoat#150: Tetrahydrofurfuryl acrylate, manufactured by Osaka Organic Chemical Industry Co., Ltd. MEDOL-10: Methyl acrylate (2-methyl-2-ethyl-1,3-dioxolane-4-yl) ester, manufactured by Osaka Organic Chemical Industry Co., Ltd. New Frontier PGA: Phenyl glycidyl ether acrylate, manufactured by Daiichi Kogyo Seiyaku Co., Ltd. SR506: Isoborneol acrylate, manufactured by Arkema Co., Ltd.

[塑化劑] Adeka Polyether P－3000：聚醚多元醇，ADEKA公司製造 Kuraray Polyol P－3010：聚酯多元醇，Kuraray公司製造 Krasol LBH－P3000：聚丁二烯多元醇，Cray Valley公司製造 [Plasticizer] Adeka Polyether P-3000: Polyether polyol, manufactured by ADEKA Kuraray Polyol P-3010: Polyester polyol, manufactured by Kuraray Krasol LBH-P3000: Polybutadiene polyol, manufactured by Cray Valley

[抗氧化劑] Irganox1135：3－(4－羥基－3,5－二異丙基苯基)丙酸辛酯，BASF公司製造 [Antioxidant] Irganox1135: 3-(4-hydroxy-3,5-diisopropylphenyl) propionate, manufactured by BASF

[光聚合起始劑] Irgacure184：1－羥基環己基苯基酮，BASF公司製造 [Photopolymerization initiator] Irgacure 184: 1-Hydroxycyclohexylphenyl ketone, manufactured by BASF

[光硬化性樹脂組成物之製備] 以下述表1所示之摻合量（質量份）將各成分均勻地混合而製備實施例及比較例之光硬化性樹脂組成物。 [Preparation of photocurable resin composition] The photocurable resin composition of the embodiment and comparative example was prepared by uniformly mixing the components in the blending amounts (parts by mass) shown in Table 1 below.

[偏光板變色試驗] 如圖11所示，準備依序具備厚度80 μm之TAC層14、厚度30 μm之PVA層15、厚度80 μm之TAC層16及厚度25 μm之丙烯酸系黏著劑層17之偏光板18（Polatechno股份有限公司製造）。 [Polarizing plate color change test] As shown in FIG. 11 , a polarizing plate 18 (manufactured by Polatechno Co., Ltd.) having a TAC layer 14 with a thickness of 80 μm, a PVA layer 15 with a thickness of 30 μm, a TAC layer 16 with a thickness of 80 μm, and an acrylic adhesive layer 17 with a thickness of 25 μm was prepared in this order.

如圖12所示，介隔偏光板18之丙烯酸系黏著劑層17而貼合厚度1.1 mm之玻璃板19。又，於貼合有偏光板18之玻璃板19上滴加光硬化性樹脂組成物20，於所滴加之光硬化性樹脂組成物20上載置厚度1.1 mm之玻璃板21，藉由玻璃板21之自體重量而貼附玻璃板21。藉此獲得玻璃接合體22。As shown in FIG12 , a glass plate 19 with a thickness of 1.1 mm is bonded via an acrylic adhesive layer 17 of a polarizing plate 18. A photocurable resin composition 20 is dripped onto the glass plate 19 bonded with the polarizing plate 18, and a glass plate 21 with a thickness of 1.1 mm is placed on the dripped photocurable resin composition 20, and the glass plate 21 is bonded by its own weight. Thus, a glass bonded body 22 is obtained.

使用紫外線照射裝置，以累計光量成為5000 mJ／cm 2之方式自玻璃接合體22之玻璃板21側照射紫外線，使光硬化性樹脂組成物20硬化而形成硬化樹脂層23，獲得圖13所示之試驗用之影像顯示裝置24。形成於玻璃板19與玻璃板21之間的硬化樹脂層23之最大厚度約為0.3 mm。又，形成於偏光板18與玻璃板21之間的硬化樹脂層23之厚度為0.1 mm。硬化樹脂層23之反應率為90%以上。 Using an ultraviolet irradiation device, ultraviolet rays were irradiated from the glass plate 21 side of the glass bonded body 22 in such a manner that the accumulated light amount became 5000 mJ/ cm2 , so that the photocurable resin composition 20 was cured to form a cured resin layer 23, and the image display device 24 for the test shown in FIG13 was obtained. The maximum thickness of the cured resin layer 23 formed between the glass plate 19 and the glass plate 21 was about 0.3 mm. In addition, the thickness of the cured resin layer 23 formed between the polarizing plate 18 and the glass plate 21 was 0.1 mm. The reaction rate of the cured resin layer 23 was more than 90%.

將影像顯示裝置24於100℃之環境下放置240小時。藉由目視而確認放置240小時後之影像顯示裝置24中之偏光板18有無變色。將判斷為偏光板18無變色之情形時評價為「○」，將判斷為偏光板18有變色之情形時評價為「×」。將結果示於表1。The image display device 24 was placed in an environment of 100° C. for 240 hours. After being placed for 240 hours, the polarizing plate 18 in the image display device 24 was visually checked for discoloration. The evaluation was “○” when the polarizing plate 18 was judged to be non-discolored, and “×” when the polarizing plate 18 was judged to be discolored. The results are shown in Table 1.

[透濕度試驗] 依照JISZ0208之透濕度試驗（透濕杯式法）測定硬化樹脂層之透濕度。對上述光硬化性樹脂組成物以累計光量成為5000 mJ／cm 2之方式照射紫外線而準備厚度0.3 mm之硬化樹脂層。如圖14所示，將該硬化樹脂層25設置於裝有氯化鈣26之杯27中，放入至40℃、相對濕度90%之恆溫機中，測定放置24小時後之氯化鈣26之增加重量，藉此求出硬化樹脂層25之透濕度。 [Moisture permeability test] The moisture permeability of the hardened resin layer was measured according to the moisture permeability test (moisture permeability cup method) of JIS Z0208. The above-mentioned photocurable resin composition was irradiated with ultraviolet rays in such a manner that the cumulative light amount became 5000 mJ/ cm2 to prepare a hardened resin layer with a thickness of 0.3 mm. As shown in FIG14, the hardened resin layer 25 was placed in a cup 27 containing calcium chloride 26, and placed in a constant temperature machine at 40°C and a relative humidity of 90%. The increased weight of calcium chloride 26 after being placed for 24 hours was measured to obtain the moisture permeability of the hardened resin layer 25.

再者，下述表中，「*」表示光硬化性樹脂組成物為非相容而各種成分分離，結果無法形成硬化樹脂層，而無法進行各評價。In the following table, "*" indicates that the photocurable resin composition was incompatible and the components separated, resulting in no hardened resin layer being formed, and thus no evaluation could be performed.

[表1]    實施例1 實施例2 實施例3 實施例4 實施例5 實施例6 實施例7 實施例8 比較例1 比較例2 比較例3 比較例4 比較例5 比較例6 (甲基)丙烯酸酯樹脂 Artresin UN－6202 40 40 40 40 40 40 － 40 40 40 40 － － － Artresin UN－7700 － － － － － － 40 － － － － － － － TE－2000 － － － － － － － － － － － 40 40 40 單官能單體 4HBA 30 － － － 15 － 30 30 － － 30 30 － － ACMO － 30 － － － － － － － － － － － － Viscoat#150 － － 30 － － － － － － － － － － － MEDOL－10 － － － 30 － － － － － － － － － － New Frontier PGA － － － － － 30 － － － － － － － － SR506 － － － － 15 － － － 30 30 － － 30 30 塑化劑 Adeka Polyether P－3000 30 30 30 30 30 30 30 － 30 － － － 30 － Krasol LBH－P3000 － － － － － － － － － 30 30 30 － 30 Kuraray Polyol P－3010 － － － － － － － 30 － － － － － － 抗氧化劑 Irganox1135 1 1 1 1 1 1 1 1 1 1 1 1 1 1 光聚合起始劑 Irgacure184 1 1 1 1 1 1 1 1 1 1 1 1 1 1 合計 102 102 102 102 102 102 102 102 102 102 102 102 102 102 評價 透濕度（40℃／90%RH）[g／m 2／day] 870 710 662 595 594 492 534 681 390 119 * * * 17 偏光板變色試驗（100℃／240 h） ○ ○ ○ ○ ○ ○ ○ ○ × × * * * × [Table 1] Embodiment 1 Embodiment 2 Embodiment 3 Embodiment 4 Embodiment 5 Embodiment 6 Embodiment 7 Embodiment 8 Comparison Example 1 Comparison Example 2 Comparison Example 3 Comparison Example 4 Comparison Example 5 Comparison Example 6 (Meth)acrylate resin Artresin UN-6202 40 40 40 40 40 40 - 40 40 40 40 - - - Artresin UN-7700 - - - - - - 40 - - - - - - - TE-2000 - - - - - - - - - - - 40 40 40 Monofunctional monomer 4HBA 30 - - - 15 - 30 30 - - 30 30 - - ACMO - 30 - - - - - - - - - - - - Viscoat#150 - - 30 - - - - - - - - - - - MEDOL-10 - - - 30 - - - - - - - - - - New Frontier PGA - - - - - 30 - - - - - - - - SR506 - - - - 15 - - - 30 30 - - 30 30 Plasticizer Adeka Polyether P-3000 30 30 30 30 30 30 30 - 30 - - - 30 - Krasol LBH-P3000 - - - - - - - - - 30 30 30 - 30 Kuraray Polyol P-3010 - - - - - - - 30 - - - - - - Antioxidants Irganox1135 1 1 1 1 1 1 1 1 1 1 1 1 1 1 Photopolymerization initiator Irgacure184 1 1 1 1 1 1 1 1 1 1 1 1 1 1 Total 102 102 102 102 102 102 102 102 102 102 102 102 102 102 Reviews Moisture permeability (40℃／90%RH) [g／m 2 ／day] 870 710 662 595 594 492 534 681 390 119 * * * 17 Polarizing plate discoloration test (100℃/240h) ○ ○ ○ ○ ○ ○ ○ ○ × × * * * ×

可知實施例所使用之光硬化性樹脂組成物於硬化後之厚度0.3 mm時之透濕度於40℃、相對濕度90%之環境下為400 g／m 2／day以上，因此可抑制高溫環境下之偏光板之變色。 It can be seen that the moisture permeability of the photocurable resin composition used in the embodiment after curing at a thickness of 0.3 mm is above 400 g/m 2 /day at 40°C and a relative humidity of 90%, and thus the discoloration of the polarizing plate in a high temperature environment can be suppressed.

另一方面，可知比較例1、2、6所使用之光硬化性樹脂組成物於硬化後之厚度0.3 mm時之透濕度於40℃、相對濕度90%之環境下未達400 g／m 2／day，因此難以抑制高溫環境下之偏光板之變色。再者，由於比較例3～5所使用之光硬化性樹脂組成物為非相容，因此無法形成硬化樹脂層，而無法對硬化物之透濕度及偏光板之變色進行評價。 On the other hand, it can be seen that the moisture permeability of the photocurable resin composition used in Comparative Examples 1, 2, and 6 at a thickness of 0.3 mm after curing is less than 400 g/m 2 /day at 40°C and a relative humidity of 90%, so it is difficult to suppress the discoloration of the polarizing plate in a high temperature environment. Furthermore, since the photocurable resin composition used in Comparative Examples 3 to 5 is incompatible, a cured resin layer cannot be formed, and the moisture permeability of the cured product and the discoloration of the polarizing plate cannot be evaluated.

1:影像顯示裝置 2:偏光板 3:影像顯示單元 4:影像顯示構件 5:透光性構件 6:硬化樹脂層 7:遮光層 8:偏光元件 9:保護層 10:保護層 11:光硬化性樹脂組成物 12:光硬化性樹脂組成物層 13:暫時硬化樹脂層 14:TAC層 15:PVA層 16:TAC層 17:丙烯酸系黏著劑層 18:偏光板 19:玻璃板 20:光硬化性樹脂組成物 21:玻璃板 22:玻璃接合體 23:硬化樹脂層 24:影像顯示裝置 25:硬化樹脂層 26:氯化鈣 27:杯 100:影像顯示裝置 101:硬化樹脂層 1: Image display device 2: Polarizing plate 3: Image display unit 4: Image display component 5: Translucent component 6: Cured resin layer 7: Light shielding layer 8: Polarizing element 9: Protective layer 10: Protective layer 11: Photocurable resin composition 12: Photocurable resin composition layer 13: Temporarily cured resin layer 14: TAC layer 15: PVA layer 16: TAC layer 17: Acrylic adhesive layer 18: Polarizing plate 19: Glass plate 20: Photocurable resin composition 21: Glass plate 22: Glass bonded body 23: Cured resin layer 24: Image display device 25: Hardened resin layer 26: Calcium chloride 27: Cup 100: Image display device 101: Hardened resin layer

[圖1]係表示影像顯示裝置之一例之剖面圖。 [圖2]係表示影像顯示裝置中所使用之偏光板之一例之剖面圖。 [圖3]係表示影像顯示裝置之製造方法之步驟（A）之一例的剖面圖。 [圖4]係表示影像顯示裝置之製造方法之步驟（B）之一例的剖面圖。 [圖5]係表示影像顯示裝置之製造方法之步驟（C）之一例的剖面圖。 [圖6]係表示影像顯示裝置之製造方法之步驟（AA）之一例的剖面圖。 [圖7]係表示影像顯示裝置之製造方法之步驟（BB）之一例的剖面圖。 [圖8]係表示影像顯示裝置之製造方法之步驟（BB）之一例的剖面圖。 [圖9]係表示影像顯示裝置之製造方法之步驟（CC）之一例的剖面圖。 [圖10]係表示影像顯示裝置之製造方法之步驟（DD）之一例的剖面圖。 [圖11]係示意性地表示偏光板之剖面圖。 [圖12]係示意性地表示玻璃接合體之剖面圖。 [圖13]係示意性地表示試驗用之影像顯示裝置之剖面圖。 [圖14]係用以對透濕度試驗之方法進行說明之圖。 [FIG. 1] is a cross-sectional view showing an example of an image display device. [FIG. 2] is a cross-sectional view showing an example of a polarizing plate used in an image display device. [FIG. 3] is a cross-sectional view showing an example of step (A) of a method for manufacturing an image display device. [FIG. 4] is a cross-sectional view showing an example of step (B) of a method for manufacturing an image display device. [FIG. 5] is a cross-sectional view showing an example of step (C) of a method for manufacturing an image display device. [FIG. 6] is a cross-sectional view showing an example of step (AA) of a method for manufacturing an image display device. [FIG. 7] is a cross-sectional view showing an example of step (BB) of a method for manufacturing an image display device. [FIG. 8] is a cross-sectional view showing an example of step (BB) of a method for manufacturing an image display device. [Figure 9] is a cross-sectional view showing an example of step (CC) of a method for manufacturing an image display device. [Figure 10] is a cross-sectional view showing an example of step (DD) of a method for manufacturing an image display device. [Figure 11] is a cross-sectional view schematically showing a polarizing plate. [Figure 12] is a cross-sectional view schematically showing a glass bonded body. [Figure 13] is a cross-sectional view schematically showing an image display device for testing. [Figure 14] is a view for explaining a method for a moisture permeability test.

1:影像顯示裝置 2:偏光板 3:影像顯示單元 4:影像顯示構件 5:透光性構件 6:硬化樹脂層 7:遮光層 100:影像顯示裝置 101:硬化樹脂層 1: Image display device 2: Polarizing plate 3: Image display unit 4: Image display component 5: Translucent component 6: Hardened resin layer 7: Light shielding layer 100: Image display device 101: Hardened resin layer

Claims (5)

一種光硬化性樹脂組成物，其係用於依序具備影像顯示構件、硬化樹脂層、及透光性構件之影像顯示裝置中之上述硬化樹脂層，上述影像顯示構件包含偏光板，且，硬化後之上述光硬化性樹脂組成物於厚度0.3mm時之透濕度於40℃、相對濕度90%之環境下為400g/m2/day以上，上述光硬化性樹脂組成物含有(甲基)丙烯酸酯樹脂、單官能單體及光聚合起始劑，上述單官能單體含有含羥基之(甲基)丙烯酸酯單體及含雜環之(甲基)丙烯酸酯單體之至少1種，上述(甲基)丙烯酸酯樹脂含有聚醚系(甲基)丙烯酸胺酯低聚物及聚酯系(甲基)丙烯酸胺酯低聚物之至少1種，上述(甲基)丙烯酸酯樹脂之含量為5~50質量%，上述單官能單體之含量為10~40質量%。 A photocurable resin composition is used for the hardened resin layer in an image display device having an image display component, a hardened resin layer, and a light-transmitting component in sequence, wherein the image display component includes a polarizing plate, and the moisture permeability of the hardened photocurable resin composition at a thickness of 0.3 mm is 400 g/ m2 at 40°C and a relative humidity of 90%. /day or more, the photocurable resin composition contains a (meth)acrylate resin, a monofunctional monomer and a photopolymerization initiator, the monofunctional monomer contains at least one of a hydroxyl-containing (meth)acrylate monomer and a heterocyclic (meth)acrylate monomer, the (meth)acrylate resin contains at least one of a polyether-based (meth)acrylate amine oligomer and a polyester-based (meth)acrylate amine oligomer, the content of the (meth)acrylate resin is 5-50% by mass, and the content of the monofunctional monomer is 10-40% by mass. 如申請專利範圍第1項之光硬化性樹脂組成物，其進而含有抗氧化劑。 For example, the photocurable resin composition in item 1 of the patent application further contains an antioxidant. 如申請專利範圍第1項之光硬化性樹脂組成物，其中，上述影像顯示構件係於影像顯示單元之視認側表面形成有偏光板之影像顯示面板。 For example, the photocurable resin composition of item 1 of the patent application, wherein the image display component is an image display panel having a polarizing plate formed on the viewing side surface of the image display unit. 一種影像顯示裝置，其依序具備影像顯示構件、硬化樹脂層及透光性構件，上述影像顯示構件包含偏光板，且，上述硬化樹脂層其厚度0.3mm時之透濕度於40℃、相對濕度90%之環境下為400g/m2/day以上，上述硬化樹脂層為光硬化性樹脂組成物之硬化物，上述光硬化性樹脂組成物含有(甲基)丙烯酸酯樹脂、單官能單體、及光聚合起始劑， 上述(甲基)丙烯酸酯樹脂含有聚醚系(甲基)丙烯酸胺酯低聚物及聚酯系(甲基)丙烯酸胺酯低聚物之至少1種，上述(甲基)丙烯酸酯樹脂之含量為5~50質量%，上述單官能單體之含量為10~40質量%。 An image display device comprises an image display component, a hardened resin layer and a light-transmitting component in sequence. The image display component comprises a polarizing plate, and the moisture permeability of the hardened resin layer at a thickness of 0.3 mm is 400 g/m 2 /day or more at 40° C. and a relative humidity of 90%. The hardened resin layer is a hardened product of a photocurable resin composition. The photocurable resin composition comprises a (meth)acrylate resin, a monofunctional monomer, and a photopolymerization initiator. The (meth)acrylate resin comprises at least one of a polyether (meth)acrylate amine oligomer and a polyester (meth)acrylate amine oligomer. The content of the (meth)acrylate resin is 5-50% by mass, and the content of the monofunctional monomer is 10-40% by mass. 一種影像顯示裝置之製造方法，其包括下述步驟：將申請專利範圍第1至3項中任一項之光硬化性樹脂組成物塗佈於透光性構件之表面、或包含偏光板之影像顯示構件之表面；介隔上述光硬化性樹脂組成物將上述影像顯示構件與上述透光性構件貼合；及使上述光硬化性樹脂組成物硬化。 A method for manufacturing an image display device, comprising the following steps: applying a photocurable resin composition of any one of items 1 to 3 of the patent application scope on the surface of a light-transmitting component, or the surface of an image display component including a polarizing plate; bonding the image display component to the light-transmitting component via the photocurable resin composition; and curing the photocurable resin composition.
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